s=input()
s1=''
for char in s:
    if char =='(':
        s1=s1+char
    if char ==')':
        if len(s1)>0:
            if s1[len(s1)-1] =='(':
                s1 = s1[:-1]
    if char =='{':
        s1=s1+char
    if char =='}':
        if len(s1)>0:
            if s1[len(s1)-1] =='{':
                s1 = s1[:-1]
    if char =='<':
        s1=s1+char
    if char =='>':
        if len(s1)>0:
            if s1[len(s1)-1] =='<':
                s1 = s1[:-1]


    print (s1)
if len(s1)==0:
    print('True')
else:
    print('False')
